Lubrication, Warning – Twin City Centrifugal Fans - ES-52 User Manual
Page 6
6
Twin City Engineering Supplement ES-52
. Bearing. failure. can. occur. from. many. causes.. See.
Troubleshooting.section.for.details.
Note:.All.speeds.shown.do.not.apply.to.all.shaft.sizes.
in.that.group..Consult.the.factory.if.in.doubt.of.maxi-
mum.speed.for.a.particular.bearing.
Lubrication
Proper. lubrication. of. bearings. helps. assure. maximum.
bearing.life..All.fans.are.equipped.with.decals.indicating.
relubrication. intervals. for. normal. operating. conditions..
However,.every.installation.is.different.and.the.frequency.
of.lubrication.should.be.established.accordingly.
. Experience. has. shown. that. airborne. moisture. and.
heavy.dust.will.dramatically.reduce.the.life.of.the.bearing.
lubricant..If.any.of.these.adverse.conditions.exist,.it.is.
recommended. that. bearings. be. regreased. after. several.
days. of. operation.. Lubrication. intervals. can. then. be.
adjusted.based.on.the.condition.of.the.purged.grease.
. Figure.9.illustrates.the.decal.for.ball.bearings,.Figure.
10.the.decal.for.solid.pillow.block.spherical.roller.bear-
ings,.and.Figure.11.shows.the.decal.for.spherical.roller.
Figure 11. Safety & Lubrication Instructions for Fans
with Spherical Roller Bearings with Split Pillow
Block Housings
WARNING
1.. This.equipment.must.not.be.operated.without.proper.guarding.of.
all. moving. parts.. While. performing. maintenance. be. sure. remote.
power.switches.are.locked.off..See.installation.manual.for.recom-
mended.safety.practices.
2.. Before.starting:.Check.all.setscrews.for.tightness,.and.rotate.wheel.
by.hand.to.make.sure.it.has.not.moved.in.transit.
*Suggested.lubrication.interval.under.ideal.continuous.operating.condi-
tions..Remove.bearing.cap.and.observe.condition.of.used.grease.after.
lubricating.. Adjust. lubrication. frequency. as. needed.. Use. one-half. of.
listed.interval.for.vertical.shaft.applications.or.for.24.hour.operation...
Hours.of.operation,.temperature,.and.surrounding.conditions.will.affect.
the.relubrication.frequency.required..Clean.and.repack.bearings.annu-
ally..Remove.old.grease,.pack.bearing.full.and.fill.housing.reservoir.
on.both.sides.of.bearings.to.bottom.of.shaft........................................................
1.. Lubricate.with.a.high.quality.NLGI.No..2.lithium-base.grease.hav-
ing. rust. inhibitors. and. antioxidant. additives,. and. a. minimum. oil.
viscosity.of.500.SUS.at.100°F.(38°C)..Some.greases.having.these.
properties.are:
.
Shell.-.Gadus.S2.V100.2.
Exxon.-.Ronex.MP.
Mobil.-.Mobilith.SHC100.
Mobil.-.Mobilith.SHC220
2.. Lubricate. bearings. prior. to. extended. shutdown. or. storage. and.
rotate.shaft.monthly.to.aid.corrosion.protection.
3.. Purge.or.remove.old.grease.when.changing.lubrication.brands.or.
types.
Static Oil Lubrication
1.. Use.only.high.quality.mineral.oil.with.a.VG.grade.indicated.on.the.
customer.submittal.drawing..
2.. Static. oil. level. should. be. at. the. center. of. the. lower-most. roller.
(Do.not.overfill.)
3.. Complete.lubrication.change.should.be.made.annually.
Relubrication Schedule (Months)*
Spherical Roller Bearing - Split Pillow Blocks
Speed (RPM)
Shaft DIA
500
750 1000 1500 2000 2500 3000 3500 4000
1
7
⁄
16
" thru 1
15
⁄
16
".
6.
4
1
⁄
2
.
4.
4.
3
1
⁄
2
. 2
1
⁄
2
. 2
1
⁄
2
.
1.
1. 0.50.oz.
...
(35 – 50)
2
3
⁄
16
" thru 2
13
⁄
16
".
5.
4
1
⁄
2
.
4.
2
1
⁄
2
. 2
1
⁄
2
. 1
1
⁄
2
.
1
⁄
2
.
1
⁄
4
.
1
⁄
4
. 0.75.oz.
...
(55 – 70)
2
15
⁄
16
" thru 3
15
⁄
16
".
4
1
⁄
2
.
4.
3
1
⁄
2
. 2
1
⁄
2
. 1
1
⁄
2
.
1.
1
⁄
2
.
.
. 2.00.oz.
...
(75 – 100)
4
7
⁄
16
" thru 4
15
⁄
16
".
4.
4.
2
1
⁄
2
.
1.
..
1
⁄
2
.
.
.
.
. 4.00.oz.
..
(110 – 135)
5
7
⁄
16
" thru 6
15
⁄
16
".
4.
2
1
⁄
2
. 1
1
⁄
2
.
.
.
.
.
.
. 7.00.oz.
..
(140 – 180)
Grease
to be
added
at each
interval
WARNING
1.. This.equipment.must.not.be.operated.without.proper.guarding.of.
all. moving. parts.. While. performing. maintenance. be. sure. remote.
power.switches.are.locked.off..See.installation.manual.for.recom-
mended.safety.practices.
2.. Before.starting:.Check.all.setscrews.for.tightness.and.rotate.wheel.
by.hand.to.make.sure.it.has.not.moved.in.transit.
*Suggested.lubrication.interval.under.ideal.continuous.operating.condi-
tions..Relubricate.while.running,.if.safety.permits,.until.some.purging.
occurs.at.seals..Adjust.lubrication.frequency.depending.on.conditions.
of.purged.grease..Use.one-half.of.listed.interval.for.vertical.shaft.appli-
cations.or.for.24.hour.operation..Hours.of.operation,.temperature,.and.
surrounding.conditions.will.affect.the.relubrication.frequency.required...
1.. Lubricate.with.a.high.quality.NLGI.No..2.lithium-base.grease.hav-
ing. rust. inhibitors. and. antioxidant. additives,. and. a. minimum. oil.
viscosity.of.500.SUS.at.100°F.(38°C)..Some.greases.having.these.
properties.are:
.
Shell.-.Gadus.S2.V100.2.
Exxon.-.Ronex.MP.
Mobil.-.Mobilith.SHC100.
Mobil.-.Mobilith.SHC220
2.. Lubricate. bearings. prior. to. extended. shutdown. or. storage. and.
rotate.shaft.monthly.to.aid.corrosion.protection.
Relubrication Schedule (Months)*
Spherical Roller Bearing - Solid Pillow Blocks
Speed (RPM)
Shaft DIA
500 1000 1500 2000 2500 3000 3500 4000 4500
1" thru 1
7
⁄
16
"
6
4
4
2
1
1
1
1
1
⁄
2
...
(25 – 35)
1
11
⁄
16
" thru 2
3
⁄
16
"
4
2
1
1
⁄
2
1
1
⁄
2
1
⁄
2
1
⁄
2
1
⁄
2
1
⁄
2
...
(40 – 55)
2
7
⁄
16
" thru 3
7
⁄
16
"
3
1
1
⁄
2
1
1
⁄
2
1
⁄
2
1
⁄
4
1
⁄
4
...
(60 – 85)
3
15
⁄
16
" thru 4
15
⁄
16
"
2
1
⁄
2
1
1
⁄
2
1
⁄
4
...
(90 – 125)
Figure 10. Safety & Lubrication Instructions for Fans
with Unit Roller Bearings
WARNING
1.. This.equipment.must.not.be.operated.without.proper.guarding.of.
all. moving. parts.. While. performing. maintenance. be. sure. remote.
power.switches.are.locked.off..See.installation.manual.for.recom-
mended.safety.practices.
2.. Before.starting:.Check.all.setscrews.for.tightness.and.rotate.wheel.
by.hand.to.make.sure.it.has.not.moved.in.transit.
*.Suggested.lubrication.interval.under.ideal.continuous.operating.con-
ditions..Relubricate.while.running,.if.safety.permits,.until.some.purging.
occurs.at.seals..Adjust.lubrication.frequency.depending.on.conditions.
of.purged.grease..Use.one-half.of.listed.interval.for.vertical.shaft.appli-
cations.or.for.24.hour.operation..Hours.of.operation,.temperature,.and.
surrounding.conditions.will.affect.the.relubrication.frequency.required.
1.. Lubricate.with.a.high.quality.NLGI.No..2.lithium-base.grease.hav-
ing. rust. inhibitors. and. antioxidant. additives,. and. a. minimum. oil.
viscosity.of.500.SUS.at.100°F.(38°C)..Some.greases.having.these.
properties.are:
.
Shell.-.Gadus.S2.V100.2.
Exxon.-.Ronex.MP.
Mobil.-.Mobilith.SHC100.
Mobil.-.Mobilith.SHC220
2.. Lubricate. bearings. prior. to. extended. shutdown. or. storage. and.
rotate.shaft.monthly.to.aid.corrosion.protection.
Figure 9. Safety & Lubrication Instructions for Fans
with Ball Bearings
Relubrication Schedule (Months)*
Ball Bearing Pillow Blocks
Speed (RPM)
Shaft DIA
500 1000 1500 2000 2500 3000 3500 4000 4500
1
⁄
2
" thru 1
11
⁄
16
".
6.
6.
5.
3.
3.
2.
2.
2.
1
....
(13 – 45)
1
15
⁄
16
" thru 2
7
⁄
16
".
6.
5.
4.
2.
2.
1.
1.
1.
1
....
(50 – 60)
2
11
⁄
16
" thru 2
15
⁄
16
".
5.
4.
3.
2.
1.
1.
1.
....
(65 – 75)
3
7
⁄
16
" thru 3
15
⁄
16
".
4.
3.
2.
1.
1
...
(80 – 100)